(display (car (cdr (car (cddr (list 1 3 (list 5 7) 9))))))
(newline)
(display (car (car (list (list 7)))))
(newline)
(display 
    (car (cdr (car (cdr (car (cdr (car (cdr (car (cdr (car (cdr
        (list 1 (list 2 (list 3 (list 4 (list 5 (list 6 7))))))
    ))))))))))))   
)
(exit)